Panasonic RR-US050P Service Manual

RR-US050P

Colour

S............Silver Type

ORDER NO. AD0502013C1

A1

IC Recorder

Specification

Power output: 350mW(max.)

Frequencyresponse: 280Hz - 5,200Hz(HQ mode)

270Hz - 3,400Hz(FQ/SP mode)

S/N: 35dB(HQ mode)

Jack:

Outputjack; Earphone, 3.5mm(1/8in.),

0.5mW+0.5mW 16Ω

Inputjack; Mic, 3.5mm(1/8in.), 0.56mV plug in

power

Speaker: 20mm(1-3/32in.) 8Ω

Power requirement: DC 3V(2AAA/LR03 size batteries)

Dimensions (W×H×D):

Maxdimensions; 32.5×118.8×15.9mm (1-9/32×4-

11/16×5/8in.)

Cabinet dimensions; 29.8×118.5×14.2mm (1-3/16×4-

21/32×9/16in.)

Mass:

with batteries; 61g (2.15oz.)

without batteries; 38g (1.34oz.)

Operational temperature range: 0°C-40°C (32°F-104°F)

[When used at 25°C(77°F) on a flat, stable surface]

Batterylife:

*The batterylife maybe less depending on the operating conditions.

Note:

Specifications are subject to change without notice.
Mass and dimensions are approximate.

CONTENTS

Page Page

1 Accessories 3

2 Part Names

© 2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

3

RR-US050P

3 Operation Checks and Component Replacement Procedures 3

3.1. Checking for the analog P.C.B. and digital P.C.B.

3.2. Replacement for the LCD

3.3. Replacement for the speaker

4 Schematic Diagram

4.1. Schmatic Diagram Notes

4.2. Schematic Diagram

5 Printed Circuit Board

6 Block Diagram
7 Type Illustration of IC 痴, Transistors and Diodes

8 Operation Check Mode

8.1. To Enter Operation Check

8.2. Operation Check Method

9 Troubleshooting

3

6

6

7

7

9

13

15

15

16

16

9.1. Unit won 稚 record

9.2. Cannot Delete

9.3. Unit Won 稚 play

9.4. Unit won 稚 record

9.5. Unit won 稚 play

9.6. USB Troubleshooting

10 Terminal Function of ICｴs

10.1. IC4 (MN101C74FRA) :System Control / LCD Drive

11 Replaceme nt Parts List

12 Cabinet Parts Location

13 Packaging

16

19

19

19

20

20

21

22

23

23

24

27

28

2

1 Accessories

RR-US050P

· Dictation Cord(K2KC2CA00003)...................................1pc.

· USB cable

(K2KZ4CB0008)............................................1pc.

2 Part Names

· Stereo Earphones(L0BAB0000172).............................1pc.

· CD-ROM (Voice Editing) (RFE0170A-S).......................1pc.

3 Operation Checks and Component Replacement

Procedures

3.1. Checking for the analog P.C.B.
and digital P.C.B.

3

RR-US050P

4

RR-US050P

· Check the analog P.C.B. and digital P.C.B. as shown

below.

5

RR-US050P

3.2. Replacement for the LCD

· Follow the (Step 1) - (Step16) of item 3.1.1.

3.3. Replacement for the speaker

· Follow the (Step 1) - (Step 9) of item 3.1.1.

6

4 Schematic Diagram

4.1. Schmatic Diagram Notes

(This schematic diagram may be modified at any time with
development of new technology.)

· S1 : Stop switch (

· S2 : Playback switch (

· S3 : Forward switch (

· S4 : Backward switch(

· S5 : Folder, Menu switch (

· S6 : Erase switch (ERASE).

· S7 : A-B repeat switch.

· S8 : Recording/Pause switch (REC/PAUSE).

· S9 : Volume (+) switch.

· S10 : Volume (-) switch.

· S11 : Recording mode switch (REC MODE).

· S13 : Hold switch (HOLD) in “OFF” position.

· S15 : Microphone directional switch in “OFF” position.

· S17 : Speed control switch in “OFF” position.

· S18: Meeting/Dictation select switch

(MEETING/DICTATION) in “MEETING” position.

· VR1:Volume control VR.

· DC voltage measurements are taken with electronics

voltmeter. The negative terminal of the battery provides
negative meter connec tion point.

No mark.....Recording, ( ).....Playback

· Important safety notice

Components identified by
characteristics impotant for safety.

When replacing any of components, use only
manufacturer’s specified parts.

· Signal lines

: Sound source signal (ANALOG) line

: Sound source signal (DIGITAL) line

).

).

).

).

mark have special

: Positive voltage line

RR-US050P

).

7

RR-US050P

8

4.2. Schematic Diagram

RR-US050P

SCHEMATIC DIAGRAM-1

H

2 AAA SIZE(LR03)
BATTERIES 3V

G

SPEAKER

F

JK1
EARPHONE

E

ANALOG CIRCUIT

A

IP1

D4FBR7500008

0.1

C95

CP2

2

1

R219

2
4
3
1

47

R4 56

L2

C53

0.022

NOTE:
The number which notedat the connectors on the schematic diagramas "SCHEMATIC DIAGRAM-1" or"SCHEMATIC DIAGRAM-2"
indicates the schematic diagramserial number located on the left cornerin the schematic diagram.

R16

470K

R47
10K

L1

D2

B0JCMD000010

CE

LX

C37

C38

C212

6.3V100

100

R44

123

DD

IC8

NC

C0DBAGC00024

DC-DC CONVERTER

GND V

NC

64

5

6.3V100

Q9
B1ADKB000008

POWER SUPPLY

C211

6.3V100

6.3V100

2.9V 2.9V

2.2V

L7

L8
L4

D5

B0JCMD000010

C56

C97

0.022

R45

0.1

100K

C41

R218

0.1

C40

10V10

1M

C54

0.022

C218

6.3V100

C219

6.3V33

R72

680

Q10
B1ADKB000008

POWER SUPPLY

3V 3V

2.3V

Q13
B1CFFB000001

R39

4.7K

POWER SUPPLY
CONTROL

D

G

S

:SOUND SOURCESIGNAL(ANALOG) LINE:POSITIVE VOLTAGELINE

D26

1SS355TE17

D24

1SS355TE17

D25

1SS355TE17

R38

R41

Y
A
B

C

D

1M

E

G

H

I

10

22K

R53

C26

C55

10V4.7

0.022

J

N
K

L

M

R226

D

M1
MICROPHONE

D11

2.2V
G

0.2V

MA2S111TX

C10

0.022

0.2V

D

0V
G

S

R203

1M

S15(DIRECTIVITY)

OFFON

100K

R205

C252

0.047

2.2M

R252

Q15
B1CFFB000001

SWITCHING

R202

1M

2.2K

R209

R250

220

D

G

S

Q25
B1CFFB000001

SWITCHING

SWITCHING

1M

R201

C203

R210

0.022

4.7K

C250

0V

0.022

Q21
B1CFFB000001

SWITCHING

0.22

C254

R224

(0V)

470K

0.5V

Q5
2SD2216J0L

SWITCHING

G

R254

4.7M

R217

2.2K

IC14

1M

R208

C202

0.1

D

S

0V

R207

47K

0V

R206

C15

R10

1M

0.47

2.2K

(0V)

0.9V

(0V)

0.9V

R99

1K

C0ABAB000112

MIC AMP

DD

V

1

2

3

0V

5

+IN

GND

-IN OUT

4

Q6
B1CFFB000001

SWITCHING

D

0V
G

S

1M

R40

(0V)

1.9V

(0V)

0.9V

C92

R211
150K

C5

100P

0.01
R225

470K

R251

R59

220

10K

C251

0.022

C205

0.022

R215

4.7K

0V

G

Q22
B1CFFB000001

SWITCHING

0V

(0V)

1.4V

(0V)

1.9V

D

(0.3V)

S

D

0.2V
G

S

D

G

S

L6
L5

C200

0.022

Q20
B1CFFB000001

SWITCHING

C

M2
DIRECTIONAL
MICROPHONE
(Lch)

M3

B

A

DIRECTIONAL
MICROPHONE
(Rch)

JK2
MIC

CP3

2
1

CP4

2
1

2
4
3
1

Q12
B1CFHC000003

SWITCHING

Q1
B1CFHC000003

SWITCHING

L12
0

L3

0

4V10

C228

D

0V

R214

S

Q7
B1CFFB000001

SWITCHING

0.01

C224

1M

R213

C204

0.1

1M

47K

R216

R238

0V

SD

0V

G

1M

R239

Q17
2SD2216J0L

POWER SUPPLY

1K

10K

IC15
C0ABAB000112

MIC AMP

(0V)

0.9V
1

2

(0V)

0.9V
3

0.47

C223

2.2K

R237

C17

6.3V22

+IN

GND

-IN OUT

C19

0.22

DD

V

MA2S72800L

R12

4.7M

5

4

C255

(0V)

1.9V

(0V)

0.9V

D6

6.3V22

C91

100P

R212

150K

C60

0.1

MA2S111TX

MA2S111TX

R60 47K

C217

D7

MA2S72800L

D8

D9

0.1

0

R58

D21

MA2S72800L

D22

0.1

C253

MA2S72800L

Q
R
S

T

O

U

V

F
P

RR-US050(P) ANALOG CIRCUIT DIAGRAM

121110987654321

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